| 초록 |
The rapid development of the surface patterning and modification tools opened numerous fabrication possibilities of the advanced surface. In this study, we investigate the contribution of the droplet's contact angle on flat surfaces to their behavior on the micro-grooved surface. The micro-grooved surface was fabricated via the fused deposition modeling 3D printing with polylactide filament. A super-amphiphilic surface was obtained via optimization of the topography to maximize the capillary force, which induces spontaneous liquid spreading. Furthermore, to make the surface more hydrophilic for gaining super-amphiphilic micro-groove surface (SAMS) we introduce the additional step involving vacuum Ar plasma treatment to increase the ratio of OH/C-C. We tested the flat and micro-grooved surface properties before and after plasma by using water, diiodomethane (DIM), and ethylene glycol (EG). Moreover, the application of SAMS is also evaluated through liquid transportation, fog harvesting. SAMS can transport DIM, EG, and water both vertically and horizontally. For the fog harvesting performance, the collection rate is increased by 75% in comparison with the flat surface. |
